The maximum annual occupational dose for adults working with radioactive material is:

The maximum annual occupational dose for adults working with radioactive material is set at 5 REM (or 5000 mrem). This limit is established to ensure the safety of workers who may be exposed to ionizing radiation as part of their job. The dose limit is designed to minimize the potential for harmful effects from radiation exposure, such as an increased risk of cancer or other health issues.

This regulatory standard reflects a balance between allowing necessary occupational exposure for workers involved in critical industries, such as nuclear power and medical radiography, while also safeguarding their long-term health. The limit is based on extensive research and risk assessments conducted by organizations such as the National Council on Radiation Protection and Measurements (NCRP) and the Environmental Protection Agency (EPA), which continuously evaluate the safety standards necessary to protect workers.

In this context, the other options do not align with the established safety criteria for occupational exposure.